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/* |
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Simple dimmer controlled with buttons |
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Sarverott @ 2023 |
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https://gist.github.com/Sarverott/3b352c6c3fe1c3d13f3faf642cc3b23c |
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this project ingredients: |
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- digispark board { |
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ATtiny85 :: [ Flash memory = 8kb ; frequency = 16MHz ] |
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Board operational voltage = 5V |
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( microUSB B version ) |
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} |
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- push buttons *2 (can be replaced with single tristate momentary switch) |
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- Power MOSFET [ IRFZ44VPbF by InternationalRectifier ] (or similar supplemet) |
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- 8.2KOhm resistor *2 (both can be replaced with 10KOhm) |
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- 12v power supply <IN> |
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- 12v powered LED stripe <OUT> |
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- some wires and prototype board |
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NOTE: |
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In both cases, whether soldering or using a contact plate, |
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I recommend using goldpin connectors: |
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- between the power supply and dimmer |
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- between dimmer and the led strip |
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*/ |
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const int pwmPin = 1; // output to controll MOSFET with PWM signal |
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const int lightButton = 2; // LEDs brighter button |
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const int darkButton = 0; // LEDs dimmer button |
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byte lightVolume = 255; // current light power (scale 0-255) |
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void setup() { // this is preparation |
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pinMode(pwmPin, OUTPUT); // set output pin for MOSFET |
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pinMode(lightButton, INPUT); // set input pin for button |
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pinMode(darkButton, INPUT); // set input pin for button |
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} // start routine |
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void loop() { // this is routine |
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analogWrite(pwmPin, lightVolume); // update current brightness |
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int lightButtonState = digitalRead(lightButton); // read light increse button |
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int darkButtonState = digitalRead(darkButton); // read light decrese button |
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if(lightButtonState == HIGH && lightVolume < 255) // if increse button pressed and light level below maximum |
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lightVolume++; // light level +1 |
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else if(darkButtonState == HIGH && lightVolume > 0) // if decrese button pressed and light level above minimum |
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lightVolume--; // light level -1 |
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delay(10); // wait 0.01 seconds |
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} // repeat routine |
